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The Clean Air Task Force (CATF) argues that US corn ethanol's lifecycle GHG emissions are significantly higher than EPA estimates. By shifting the analysis period to 2010-2044, CATF finds that corn ethanol emissions are approximately 28% higher than gasoline. The paper further examines scenarios where the shortfall in cellulosic biofuel production is filled by other fuels, finding that allowing sugarcane ethanol imports or additional corn ethanol would substantially increase total CO2 emissions.

The report examines the environmental, logistic, and infrastructural barriers to commercializing cellulosic ethanol from corn stover in the US, concluding that the country will likely fall short of RFS2 mandates.

The document argues that the EPA can avoid the 'blend wall'—the limit of ethanol that can be readily added to gasoline—by making corresponding reductions to advanced biofuel and total renewable fuel volume requirements when cellulosic biofuel production falls short. It warns that allowing other advanced biofuels to backfill the cellulosic void would increase ethanol use by 40% by 2021, strain global agricultural markets, and increase GHG emissions. The author suggests that if the EPA does not act, Congress should amend the Clean Air Act to mandate these reductions.

The report identifies systemic failures within the U.S. Department of Energy (DOE), including the distraction of nuclear weapons and cleanup missions, a fragmented 'stovepipe' organizational structure, and a lack of objective program evaluation. It recommends consolidating energy and science programs under a single Under Secretary, shifting the focus of applied R&D from energy sources to end-uses, and restoring the Government Owned, Contractor Operated (GOCO) model for national laboratories. The authors advocate for structured public-private consortia to drive pre-commercial research and suggest that large-scale 'first-of-a-kind' commercial demonstrations be led by the private sector rather than the DOE. Additionally, the report proposes moving nuclear weapons and nonproliferation missions to the Department of Defense and environmental cleanup to the Army Corps of Engineers or the EPA to allow DOE leadership to focus exclusively on energy innovation.

The Clean Air Task Force (CATF) has endorsed a set of fifteen water and air protection standards developed with shale gas producers in the Marcellus region, to be overseen by the Center for Sustainable Shale Development (CSSD). These standards include a ban on discharging fracking water to surface waters, a 90% water recycling requirement, and zero gas discharge to the air for wells in production. While CATF views these as the toughest standards globally, it maintains that voluntary industry agreements are not a substitute for government regulation and advocates for federal mandates on carbon capture and storage for natural gas power production.

The report assesses worldwide methane emissions from the oil and gas sector, estimating 2010 emissions at 1,554 MMTCO2e. It argues that methane is a critical target for short-term climate mitigation due to its 20-year global warming potential (GWP) being 72 times that of carbon dioxide. The document details over 80 abatement technologies, such as vapor recovery units and infrared leak imaging cameras, while analyzing barriers including government price controls, lack of industry knowledge, and the complexities of the Clean Development Mechanism (CDM).

The author proposes a two-track approach for President Obama's second term: immediate regulatory action via the EPA to reduce carbon dioxide from power plants and methane from the oil and gas industry, and a long-term strategy to revamp energy technology innovation. To achieve a target of 80 percent carbon dioxide reduction by 2050, the document suggests developing a portfolio of zero-carbon technologies, including carbon capture and storage, advanced nuclear energy, and synthetic hydrocarbon fuels, supported by more effective innovation policies and increased R&D funding.

The analysis finds that while immediate CCS installation can increase the cost of electricity (COE) by 24% to 36%, a phased approach—delaying full installation by 10 years—can reduce this premium to 13% to 19%. The lowest cost scenario is achieved when captured CO2 is sold for enhanced oil recovery (EOR).

The Clean Air Task Force calls on the EPA to finalize carbon dioxide performance standards for new fossil fuel power plants and to initiate regulations for existing power plants and methane emissions from oil and gas operations, noting that existing power plants account for over 40 percent of US carbon dioxide emissions.

The report finds that global methane emissions from landfills are likely 10-15 Tg CH4/yr, significantly lower than the ~35 Tg reported by IPCC-based methodologies. It argues that developing countries will not follow the historical trajectory of industrialized nations toward heavy landfill reliance due to established recycling cultures, space constraints in megacities, and high organic waste content. The author identifies a 'gulf' between waste management field studies and climate modeling, noting that IPCC defaults often overestimate landfilling rates and underestimate food waste fractions. Among mitigation options, aerobic composting is highlighted as the most viable for developing countries because it is low-cost, suited to high-organic waste, and reduces leachate. Projections suggest that expanding composting could reduce 2030 methane emissions by approximately 34% compared to a reference scenario, while combined incineration and composting could reduce them by 43%.

The authors contend that natural gas cannot solve the climate problem without carbon capture and storage (CCS), as it only offers a 50 per cent carbon dioxide reduction relative to coal, assuming no methane leakage. Given that fossil fuels are projected to remain a major energy source to meet growing global demand, particularly in developing countries, the document asserts that large-scale CCS is essential for all fossil power. While post-combustion capture (PCC) is commercially available for natural gas plants and faces fewer technical hurdles than coal PCC, the authors warn that relying on cheap, unabated natural gas may delay the commercialization of CCS. They recommend stricter CO2 emission limits, expanded incentives for enhanced oil recovery, and increased governmental support to scale up CCS technology.

Coal mining accounts for 8 percent of global methane emissions. While significant potential exists for abatement through degasification and ventilation air methane (VAM) oxidation, progress is hindered by policy, financial, and technological barriers. In China, legal frameworks and conflicting safety/emission standards create hurdles, while India lacks resource assessments. Russia faces issues with licensing and inefficient degasification systems. In the US, split-estate ownership on federal lands and a lack of federal mandates limit viability. The report suggests that while large-scale investment is available, a lack of small-scale funding for design and demonstration is a primary obstacle, proposing revolving funds and micro-loans as solutions.

The paper examines the 'mitigation timing question' for bioenergy, specifically how the time-frame used to calculate carbon payback affects whether bioenergy is seen as a greenhouse gas reduction or increase. The author critiques several existing approaches—including those by O'Hare et al. and Cherubini et al.—for failing to account for emissions trajectories and the disproportionate value of immediate mitigation. The author contends that once a goal of immediate mitigation is adopted, future reductions must be discounted due to the time value of money, technological progress, and the 'option value' of delaying specific commitments. The author suggests a minimum discount rate of 5% per year, which mathematically aligns with a 20-year payback period, similar to the approach used by the European Commission.

The Clean Air Task Force and analyst Steve Brick found that the additional 4.5 billion gallons of corn ethanol mandated by the RFS between 2010 and 2015 result in lifecycle GHG emissions 28% higher than an equivalent amount of gasoline, totaling 1.4 billion tons CO2e compared to 1.1 billion tons CO2e. The document notes that these emissions will not be lower than gasoline until 2054 and argues that such frontloaded emission increases complicate global climate mitigation efforts.

The author argues that geologic carbon storage and hydraulic fracturing can safely coexist in the U.S., asserting that a Princeton study erroneously ignored the vertical separation (depth) between storage reservoirs and shale gas formations. The text emphasizes that multiple impermeable layers often separate these activities and that regulatory oversight and 3D geologic studies can mitigate risks. Additionally, it notes that U.S. storage capacity is vast, including offshore sites and depleted petroleum formations, meaning shale gas activity will not impede carbon capture and storage development.

The policy brief contends that corn ethanol's success in the United States is the result of federal subsidies and mandates, such as the Renewable Fuel Standard (RFS), rather than inherent value. It highlights that corn ethanol fails to provide energy independence, does not significantly lower gas prices, and has negative environmental impacts, including higher lifecycle greenhouse gas emissions than gasoline.

The document highlights the climate risks associated with increased oil and gas production in the Arctic, specifically the emissions of methane and black carbon. It argues that the Arctic is uniquely vulnerable, with temperatures rising at twice the global average, and that the potential for an 'oil and gas rush' could exacerbate this. The authors propose a series of technical and policy interventions to mitigate these impacts, including the elimination of venting, the use of vapor recovery units, the adoption of ultra low sulfur diesel, and the establishment of standardized monitoring and reporting protocols.

The Clean Air Task Force (CATF) evaluates the EPA's New Source Performance Standards for the oil and natural gas industry, noting that the rules will reduce VOCs by hundreds of thousands of tons and methane by 1.0 to 1.7 million tons annually. However, CATF criticizes a 2.5-year delay in requiring 'green-completion' for fracked wells and the total exclusion of the natural gas transmission and storage segment, which emits over 2 million tons of methane and 65,000 tons of VOC per year.

The Clean Air Task Force (CATF) argues that the EPA's final New Source Performance Standards for the oil and gas industry must require 'green completions' to capture methane and volatile organic compounds (VOCs). The memo asserts that methane from US oil and gas operations is 25 times more potent than carbon dioxide over 100 years and contributes to global warming as much as 16% of all CO2 from US coal-fired power plants. CATF rejects industry claims that green completions are too costly or that flaring is a sufficient alternative, noting that such technologies are already used in states like Colorado and Wyoming.

The document argues that the EPA's proposed air pollution standards for the natural gas sector are essential for protecting public health and the environment, particularly through the implementation of 'green completion' technology to capture methane and smog-forming emissions from fracked wells. The authors contend that these standards are cost-effective, as the sale of recovered gas offsets compliance costs, and that they will not hinder domestic production, citing examples from Colorado and Wyoming. The letter specifically rejects proposed industry loopholes from the American Petroleum Institute (API), such as VOC percentage thresholds and implementation delays, which the authors claim would exempt millions of tons of pollution and undermine the standards' effectiveness.